http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-0168801-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c16d2144a81bfa32a665dca1e93c3d37 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M3-537 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M19-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M3-53308 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M19-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M19-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M3-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M3-537 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M19-02 |
| filingDate | 1996-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f26ab081584a684f4d0b5a84c13d09f7 |
| publicationDate | 1999-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-0168801-B1 |
| titleOfInvention | Method and apparatus for indicating status of telephone line |
| abstract | 1. TECHNICAL FIELD OF THE INVENTIONn n n The present invention relates to an apparatus and method for indicating a state of a telephone line.n n n 2. The technical problem to be solved by the inventionn n n When the calling party leaves a message to the called party that is not in use, when the indicator on the telephone of the called party lights up, a separate driving voltage is used to prevent the configuration of the exchange from being complicated and incompatible. .n n n 3. Summary of Solution to Inventionn n n The present invention provides an apparatus comprising: a switch for generating a plurality of rings corresponding to states of a telephone line; A ringer that is driven in response to a call ring generated from the saturator when a dial tone is introduced through the telephone line, and a message waiting ring generated from the exchange when a caller subscriber message is entered through the telephone line. It provides a message standby telephone including an indicator that lights up in response. The message waiting ring generated from the exchange has the same voltage value as the call ring and is characterized by varying ring cadence. Therefore, since only one DC voltage source needs to be provided in the exchange, it is possible to simplify the configuration of the exchange and to be compatible with an exchange that connects a general telephone to an extension.n n n 4. Important uses of the inventionn n n Exchange that connects message waiting phones to stations. |
| priorityDate | 1996-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.